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Product category: Analogue and Mixed Signal ICs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TP2450
Edited by the Electronicstalk Editorial Team on 28 May 2002

Quad-channel codec aids
voice over broadband

A new family of cost-effective POTS solutions for voice over broadband should enable manufacturers and service providers to quickly deploy enhanced voice capabilities on existing broadband platforms

A new family of cost-effective plain old telephone service (POTS) solutions for voice over broadband should enable manufacturers and service providers to quickly deploy enhanced voice capabilities on existing broadband platforms. TI's new programmable voice codecs directly interface with dual ringing subscriber line interface circuits (SLICs) from Intersil, forming a complete voice solution that can be used in network interface devices, SME gateways, or CPE devices such as home routers and gateways, DSL and cable modems, and multimedia terminal adapters.

Service providers and manufacturers recognise the potential revenue gain from adding voice features to a broadband data connection.

TI's POTS solution is designed to work with existing equipment, which eases the immediate costs of deploying voice over broadband and provides a migration path to next generation voice services.

'The voice over broadband customer premise market is expected to grow at a 74% annual rate to over 27 million ports shipped by 2006', said Will Strauss of market researcher Forward Concepts.

'With flexible, low-power solutions such as TI's TP2450, equipment vendors can more quickly get cost-effective products to this growing market'.

The TP2450 quad-channel device is the first member of the codec family.

When combined with Intersil's ISL5587 dual-channel ringing SLIC the two devices require only a single 3.3V power supply and offer the lowest power dissipation in the industry.

This enables line-powered applications and extends the charge life of backup batteries, significantly reducing costs for service providers and OEMs.

The programmable solution also helps manufacturers decrease system costs by integrating passive components and facilitating the use of a single design for different countries.

'Intersil's and TI's highly flexible solution allows broadband providers to cost-effectively meet the needs of the growing worldwide voice market and expand their voice capabilities as user demand rises', said Mike Althar, vice president of Intersil's Analog Solutions Group.

'The solution's programmability provides direct interfaces between the codec and SLICs for easier board design as well as transhybrid balancing and impedance matching for a truly global solution'.

'The new codec family draws on TI's broadband system-level expertise to allow for easier deployment of voice capabilities on broadband access devices, such as DSL and cable modems', said Bill Simmelink, general manager for TI's VoP business unit.

'This enables service providers and manufacturers to quickly benefit from the additional revenue stream generated by enhanced voice features'.

Support for the TP2450 and ISL5587 combined solution includes analogue reference designs, joint TI and Intersil evaluation modules, individualised customer support, and industry-leading Telogy Software products.

The TP2450 and ISL5587 are currently sampling and volume production is expected in early 2003.

Prices will range from $7 to $8 for the quad-channel codec and $5 to $6 for the dual-channel SLIC, depending on volume.

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